Why did my FSMOne order expire at the end of day?

Hi Anon, I'm not too sure what your question is but let me try to answer!

By default, orders on FSMOne are Day Orders, meaning that they will expire at the end of the day if they are not filled during the trading day. If you want your orders to be there till they are filled (across multiple trading days), you'll need to use a Good-Till-Cancelled Order (sometimes shortened to GTC order).

If you're asking why your order was not filled despite the share price reaching your order price, this could be due to lack of volume. For example, if you set an order for Share X at price $1.00. If 10 other people set their orders before you and got their orders filled at $1.00, the price will show $1.00 on your broker but if there are no more sellers, the your order will not get filled. Similarly if some orders in front of yours are filled at $1.00 but the next few orders fill higher (say, $1.01) and the price continues going up, then your order will not fill, despite the price having touched your order price during the day.

Hope this helps, cheers!